Possible Clues:

• Lumberjack’s cry, and a hint to 24-, 32-, 35- and 47-Across
• Watch over book deal
• Lumber
• Would this be it, by the sound of it?
• Woodsman's cry
• Watch, entering black wood
• Deal might get doctor into a row
• Wood prepared for use in carpentry or building
• Deal might get a doctor into a row
• Trees suitable for building or carpentry